<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>

</head>
<body>
<!-- view -->
<div id="app">
    {{message}}
</div>
<script src="https://cdn.jsdelivr.net/npm/vue@2.5.21/dist/vue.min.js"></script>
<script>
    <!--model-->
    var vm = new Vue({
        el: "#app",
        data :{
            message:"hello,vue!"
        }
    });
</script>
</body>
</html>